Microsoft Dynamics NAV is an enterprise resource planning (ERP) software product from Microsoft. The product is part of the Microsoft Dynamics family, and intended to assist with finance, manufacturing, customer relationship management, supply chains, analytics and electronic commerce for Small and Medium-sized Enterprise and local subsidiaries of large international Groups. Value-added resellers (VAR)s can have full access to the business logic source code. For modifications of the system, the proprietary programming language C/AL is used.